feat: Bank Fee expense account for every Thai company

Thai banks charge transfer and collection fees that customers net off
their payments and that the bank nets off ours; Payment Entry books
them as deductions, which need an expense account. The Standard chart
has none, so every Thai company gets "Bank Fee" under Indirect Expenses
(Company.on_update, after_install and a patch for existing sites).

default_thai_company/banking.py

@@ -0,0 +1,25 @@
+from default_thai_company.tax_withholding import company_ready, get_or_create_account, thai_companies
+
+# Thai banks charge transfer and collection fees that customers net off their
+# payments and that the bank nets off ours; Payment Entry books them as
+# deductions, which need an expense account. The Standard chart has none, so
+# every Thai company gets one under Indirect Expenses.
+BANK_FEE_ACCOUNT = "Bank Fee"
+BANK_FEE_ACCOUNT_GROUPS = ("Indirect Expenses", "Expenses")
+
+
+def ensure_bank_fee_account(company):
+	return get_or_create_account(company, BANK_FEE_ACCOUNT, "Expense", "", BANK_FEE_ACCOUNT_GROUPS)
+
+
+def setup_company(doc, method=None):
+	"""Company.on_update: Bank Fee account for a Thai company."""
+	if company_ready(doc):
+		ensure_bank_fee_account(doc.name)
+
+
+def setup_companies():
+	"""after_install and the create_bank_fee_accounts patch: companies that
+	exist before this code did never pass through `setup_company`."""
+	for company in thai_companies():
+		ensure_bank_fee_account(company)

default_thai_company/hooks.py

@@ -157,6 +157,7 @@ after_install = [
 	"default_thai_company.vat.setup_companies",
 	"default_thai_company.shipping.setup_companies",
 	"default_thai_company.payroll.setup_companies",
+	"default_thai_company.banking.setup_companies",
 ]
 # Fixture import re-inserts the Location tree; restore lft/rgt for user-added nodes.
 after_migrate = "default_thai_company.assets.rebuild_locations"
@@ -234,6 +235,7 @@ doc_events = {
 			"default_thai_company.assets.setup_company",
 			"default_thai_company.shipping.setup_company",
 			"default_thai_company.payroll.setup_company",
+			"default_thai_company.banking.setup_company",
 		],
 	},
 	# HRMS doctype; the hook only fires on sites that have it.

default_thai_company/patches.txt

@@ -9,3 +9,4 @@ default_thai_company.patches.create_vat_templates
 default_thai_company.patches.create_shipping_rules
 default_thai_company.patches.create_payroll_periods
 default_thai_company.patches.setup_salary_components
+default_thai_company.patches.create_bank_fee_accounts

default_thai_company/patches/create_bank_fee_accounts.py

@@ -0,0 +1,5 @@
+from default_thai_company.banking import setup_companies
+
+
+def execute():
+	setup_companies()

default_thai_company/translations/th.csv

@@ -79,6 +79,7 @@ Salary Deductions,รายการหักจากเงินเดือ
 Social Security,ประกันสังคม
 Social Security Payable,ประกันสังคมค้างจ่าย
 Social Security Fund contribution (Sec. 33 employee),เงินสมทบกองทุนประกันสังคม (ผู้ประกันตนมาตรา 33)
+Bank Fee,ค่าธรรมเนียมธนาคาร
 Withholding Tax Receivable,ภาษีถูกหัก ณ ที่จ่าย
 Output VAT,ภาษีขาย
 Input VAT,ภาษีซื้อ